Self-Inductance of a Single Core Cable

Tacettin İKİZ · February 11, 2025, 03:03:42 PM

Self-Inductance of a Single Core Cable

The self-inductance of a single core cable is a property that describes the electromotive force caused by the change in current in the cable.

Formula:

Code Select

L = l log (R1 / R2) (1 / 2π) μ0

Where:

L = Self-inductance of the cable
l = Length of the cable
R1 = Outer sheath radius
R2 = Conductor radius
μ0 = Permeability of free space (4π × 10⁻⁷ H/m)

Key Insights:

The inductance increases linearly with cable length.
A larger sheath radius (R1) increases inductance.
The inductance depends on the permeability (μ0) of the surrounding medium.
High frequencies affect inductance due to the skin effect.
Inductive reactance is given by
Code Select Expand
XL = 2π f L.

Additional Notes:
- At high frequencies, inductance is affected by eddy currents and the proximity effect.
- In multi-core cables, mutual inductance influences the overall behavior.

News:

Self-Inductance of a Single Core Cable

Tacettin İKİZ